Type-writing machine.



Patented Nov. 20, 1900.1.

'w. .1. BARRON. TYPE WRITING MACHINE.

(Application filed A r. 4, 1888.)

No Model.)

l vflrd WITNESSES:

M/MW

HIE ATTEIRNEY.

WALTER J. BARRON, OF NEW YORK,

N. Y., ASSIGNOR TO THE DENSMORE TYPEWRITER COMPANY, OF SYRACUSE, NEW YORK.

TYPE-WRITING MACHINE.

$L PECIFIGATION forming part of Letters Patent No. 662,141, dated November 20, 1900.

Application filed April $1898. fierial No. 676,373. kNo model.)

To all whom it may concern.-

Be it known that I, WALTER J. BARRON, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, county of Kings, State of New York, have invented certain new and useful Improvements in TypeJ Vriting Machines, of which the following is a specification.

The main object of my invention is to provide a construction whereby a card-holder may be readily attached to and detached from the platen of a type-writing machine, so that the one platen may be used for ordinary work when writing is to be done upon paper and also for special work when writing is to be done upon cards, thus obviating the necessity, general heretofore, of providing a separate platen for each class of work.

To this end my invention consists in the various features of construction and combinations of devices hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a central longitudinal vertical section of the platen of a type-writing machine embodying my improvements. Fig. 2 is a cross-section of the same, taken at the line .00 :r of Fig. 1. Fig. 3 is a perspective View of the card-holder detached and with its cam-arm removed, and Fig. 4: is a similar view of the cam arm or finger on the card-holder. Fig. 5 is an enlarged plan View of an oblong-headed screw whereby one end of the card-holder is attached to the platen.

In the several views the same part will be found designated by the same numeral of reference.

The platen is cylindrical in form, as usual, and comprises a hollow core 1 and a surrounding sheath or cover 2 of rubber. At one end of the platen is attached a head 3, and at the opposite end is attached a head 4, which is provided with ratchet-teeth 5 to cooperate with the line-spacing mechanism, as customary,but notshown. Extendinglongitudinally and centrally through the platen is a shaft or axle 6,which also passes through the said heads and through their outwardly-extending hubs and at its outer ends is seated or takes bearings in the end bars 7 of the platen frame or carriage. Preferably at each extremity of the platen shaft or axle is attached by screws 8 a hand wheel or knob 9. The platen-shaft may be attached to the left-hand head by a screw 10, passing through its hub and bearing upon said shaft, all in the customary manner.

11 designates a clam ping-bar or card-holder, which, preferably, is curved to match the curvature of the platen and which extends for the entire length of the latter. The righthand end of the card-holder is provided with a longitudinal slot or opening 12, which is adapted to the head of a screw 13, screwed radially into the platen near the right-hand end thereof, the head of the screw, however, extending far enough above the surface of the platen to enable the right-hand end of the card-holder to slip thereunder and be held thereby. The under side of the head of the screw in practice stands away from the surface of the platen a distance slightly greater than the thickness of the metal or material of the card-holder. At the left-hand end of the card-holder is formed a downwardly or radially projecting finger-piece 14, which extends slightly beyond the left-hand platenhead 3, and near its lower end said fingerpiece is provided with an in wardly-proj ecting arm or device 15, whose inner end passes through a perforation 16 in the head 3 and bears against a leaf-spring 17, secured at one end by one of the screws 18 used for attaching the head 3 to the platen. The said spring is arranged diametrically of the platen and is perforated centrally at 19 for the passage therethrough of the platen-axle 6. or device 15 is provided with a cam, wedge, or inclined edge 20, which acts against the edge of the hole 16 when the card-holder is pushed endwise and serves to lift or raise the cardholder froin the surface of the platen, so as to facilitate the introduction of the leading edge of the card thereunder. During this endwise movement of the card-holder the spring 17 is flexed, and hence when the pressure is released the said spring, acting upon the end of the arm 15, serves to move the card-holder toward the left, and by reason of another cam, wedge, or incline 21 on the arm 15, which acts against the inner, upper, or outer edge of the hole 16, the cardholder is cammed The arm or forced downwardly, so as to securely clamp or grip the inserted card. By reason of the presence of the incline 21 the card-holder is always firmly held down under the action of the spring either against the surface of the platen, if there be no card thereon, or upon the card, if one be in use, and there is never the slightest tendency or liability for the card to slip or get loose in the latter case.

On account of the presence of the longitudinal slot 12 the card-holder is adapted to play end-wise back and forth under the fingerpressure and under the spring-pressure in the acts of inserting and removing the card, and this end of the card-holder is prevented from becomingaccidentally detached by reason of aspecial constructionof the head of the screw 13, which is oblong in plan and which when the card-holder is in position extends crosswise of the slot 12, thus overlapping the body of the card-holder and preventing this end of the card holder from rising, but when it may be desired to remove the card-holder, so as to use the platen for ordinary work on paper, the screw is turned one-quarter way around so that its head may aline with the slot 12, whereupon this end of. the card-holder may be disengaged from the screw, and then the card-holder as a whole may be pressed endwise toward the left, so as to disengage the actuating-arm 15 from the left-hand platen-head. The screw 13 is located so near the right-hand end of the platen as not to be in the way of sheets of paper when ordinary work is done after the removal of the cardholder.

It is obvious that the principle of construction will admit of variance in form or arrangement without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is

1. In a type-writing machine, the combination of a platen, an endwise-movable cardholder arranged upon the surface of the platen and extending longitudinally thereof, and means for forcing the card-holder outwardly from the surface of said platen during an endwise movement, to enable a card to be introduced.

2. In a type-writing machine, the combination of a platen, an endwise-movable cardholder arrangedupon the surface of the platen and extending longitudinally thereof, and means for forcing the card-holder inwardly toward the surface of the platen after the introduction of a card and during an endwise movement of the card-holder. t

3. In a ty pe-writin g machine, the combination of a platen, acard-holder arranged upon the surface of the platen and extending longitudinally thereof, means for forcing the card holder outwardly from the surface of the platen during an endwise movement of the card-holder in one direction to permit the insertion of a card, and means for forcing the card-holder inwardly toward the surface of the platen during an endwise movement of the card-holder in the opposite direction, so as to clamp the card'upon the surface of the platen.

4. In a type-writing machine, the combination of a platen, a card-holder arranged upon the surface of the platen and extending longitudinally thereof, means for forcing the cardholder outwardly from the surface of the platen during an endwise movement of the card-holder in one direction, to permit the insertion of a card, and a spring for moving the card-holder in the opposite direction and toward the surface of the platen,'to clamp the card thereupon.

5. In a type-writing machine, the combination of a platen, a card-holder, a cam at the end thereof for forcing the card-holder outwardly from the surface of the platen during an end wise movement in one direction, to permit the insertion of a card between the holder and the platen, and another cam at the end posite direction, so as to clamp the card upon the surface of the platen.

6. In a type-writing machine, the combination of a platen, a card-holder arranged upon the surface of the platen and extending longitudinally thereof and so attached as to slide thereon, and means for raising and lowering said card-holder away from and toward the surface of the platen during the back-andforth sliding movements of said card-holder.

7. In a type-writing machine, the combination of a platen, a card-holder attached thereto and extending longitudinally thereof and slidable thereon, cams for raising and lowering said card-holder away from and toward the surface of the platen, and a returningspring.

8. In a type-writing machine, the combination of a platen, a card-holder attached thereto and havinga finger-piece and a cam-arm,

suitable bearings for the cam-arm to work against, and a returning-spring.

9. In a type-writing machine, the combination of a platen, a card-holder having a fingerpiece and a cam-arm, a platen-head having a hole for the cams on said arm to coact with, and a returning-spring.

10. In a type-writing machine, the combination of a platen, a card-holder having a slot at one end adapted to a headed device secured to the platen and provided at the oppositeend a the finger-piece, and means for retracting said cardholder when the pressure is removed and the spring is permitted to act. 4

12. In a type-writing machine, the combination of a platen having a headed device as 13 at one end thereof, a bar as 11 having a slot as 12 at one end and a finger-piece as 14 at the opposite end, the inwardly-projecting bar 15 having the cams and 21, the platenhead 3 having the hole 16, and the returningspring 17.

13. In a type-Writing machine, the combination of a platen, a spring-pressed cardholder extending longitudinally thereon, means for moving the card-holder over the surface of the platen, and means for simultaneously moving it off the surface of the platen.

14:. In a type-Writing machine, the combination of a revoluble platen, a card-holder spring-pressed thereon and rotating together therewith, a finger-piece fixed upon said cardholder, and means actuated by pressure upon the finger-piece for lifting the card-holder off the platen.

15. In a type-writing machine, the combination of a platen,a card-holder spring-pressed thereon, and a cam and a finger-piece both fixed upon the card-holder.

16. In a type-Writing machine, the combination of a platen, adetachable endwise-movable card-holder, and means for forcing the same outwardly from said platen during an endwise movement, Without detaching it from the platen, to enable a card to be introduced.

17. In a typewriting machine, the coinbi= nation with a revoluble platen of a card-holder movable over the surface thereof for the in troduction and clamping of the card, said card holder being mounted to rotate together With the platen and extending for substantially the entire length thereof.

18. In a type-writing machine, the combi nation with a revoluble platen of a card-holder movable over the surface thereof for the introduction and clamping of the card, and provided with a finger-piece, said card-holder being mounted to rotate together with the platen and extending for substantially the entire length thereof.

19. In a type-Writing machine, the combination with a revoluble platen of a detachable card-holder movable over the surface thereof for the introduction and clamping of the card, said card-holder being mounted to rotate together with the platen and extending for substantially the entire length thereof.

Signed in the borough of Manhattan, in the city, county, and State of New York, this 2d day of April, A. D. 1898.

WALTER J. BARRON.

Witnesses:

K. V. DONOVAN, ETHEL WELLS. 

